IGNOU BGGCT-131 December 2022 Previous Year Question Paper

Q1.Answer any five of the following questions. 5x4=20

(a) Differentiate between Spiral and Elliptical galaxies.

(b) Define Biosphere and state its relevance.

(c) Define Epeirogenic and Orogenic movements, giving one example for each.

(d) Give any four characteristics of Igneous rocks.

(e) What are ‘Seamounts’ and ‘Guyots’ ?

(f) What is scattering of solar radiation ?

Q2.Explain how it is related to the blue colour of the sky.

(g) Distinguish between the terms ‘weather’ and ‘climate’.

(h) Explain any two subtypes of tropical rainy climates of Koeppen’s classification.

Q3.Explain the process of mountain building according to Convection Current Theory of Holmes. Illustrate your answer with suitable diagrams.

Q4.Give a detailed description of Earth’s interior.

Q5.Illustrate your answer with a suitable diagram.

Q6.Explain in detail the Davisian Model of geographical cycle of erosion. Illustrate your answer with a suitable diagrams.

Q7.What is fog ? Explain the different types of fogs.

Q8.Write a note on temperature range of Ocean waters. Explain briefly the factors that affect the horizontal distribution of temperature of the Oceans.

Q9.Critically analyse Airy’s views on Isostasy and compare his views with Pratt’s theory. Illustrate your answer with suitable diagrams.

Q10.Explain any four relief features of Ocean floor with the help of a suitable diagram.

Q11.Explain Heat Budget of the atmosphere and Earth with the help of suitable diagrams.

Q12.Answer any two of the following questions in about 600 words each : 2x10=20

(a) What are Planetary Winds ? Explain their types with a neat sketch.

(b) Define Underground Water. Explain briefly the four sub-surface hydrological zones.

(c) Explain any three processes related to the work of wind. Explain the formation of Barchan with the help of a diagram.

(d) Define Ocean Deposits and describe any three types of ocean deposits on the basis of area of occurrence.